Abstract: A process for the production of tighthead drums having dimensional stability of the injection molded lids and blow molded drum bodies, comprises blow molding double drum bodies from plastic and centrally separating them into two drum bodies. Tighthead lids are produced by injection molding from plastic. The tighthead lids are then welded to the drum bodies. Widemouth drums are also produced by blow molding double drum bodies from plastic and centrally separating them into two drum bodies, but with a molded-on edge at a distance under the drum opening. Drum lids are injected molded from plastic with an outside flange molded-on the lower lid edge. A sealant of plastic is injected into the lids and the lids are positioned on the drum bodies sealed with a clamping ring.

Abstract: A method and apparatus of cooling and solidifying a preform involves: introducing a preform in a heated state released from an injection mold into a cooling tube having a bottom opening and an upper opening through which cooling air flows from the bottom opening to the upper opening, the bottom opening being provided with a fan for cooling air, and inserting a cooling core into the preform to place the cooling core in close contact therewith, the preform being forcibly cooled from interior and exterior thereof by cooling air flowing in a turning state between the preform and the cooling tube and a coolant supplied to the cooling core.

Abstract: The present invention provides a blow molding apparatus which conveys preforms to a blow molding stage while holding the preform by two rows of supporting plates, places the preforms in two rows of blowing molds disposed corresponding to the supporting plates, blow molding the preform into hollow containers when the blowing molds are in their closed positions, thereafter opening the blowing molds to remove the molded containers therefrom. In this blow molding apparatus the row pitch between the supporting plates is changed between one when the blowing molds are opened and another when the blowing molds are in the other conditions. In this apparatus, the row pitch between the supporting plates is not required to maintain the maximum pitch when the blowing molds are opened. Thus, the blow molding system may be reduced in size and occupying area.

Abstract: An apparatus for the preparation of a vessel having a handle, which includes an injection mold having a cavity for forming a handle having an endless holding portion and an endless attachment portion; an injection molding mechanism for injecting a resin for the handle into the cavity of the injection mold; a blow-forming or draw-blow-forming split mold having a parting surface that can be closed, cavity assembly which is arranged in the split mold plane-symmetrically with the parting surface and includes an inserting cavity for containing the handle therein, and a forming cavity which has a neck-forming cavity, a barrel-forming cavity, a closed bottom-forming cavity, a recess-forming cavity formed at a part of the barrel-forming cavity so that the diameter of a deepest part of the recess-forming cavity is substantially equal to or slightly larger than the diameter of the neck-forming cavity, a projection-forming cavity for forming a projection to project and extend through the attachment portion almost to the

Abstract: An arrangement introduces a metered volume of gas into a cavity filled with a melt of plastic. The cavity is defined by an injection mold for producing a hollow plastic body and the injection mold has an injection channel for introducing the molten plastic into the cavity. The arrangement includes a gas-injection nozzle assembly having a housing mounted in the mold and a member displaceably mounted in the housing so as to be movable between a first position and a second position located in spaced relationship to the injection channel. The housing and the member conjointly define a forward end portion of a nozzle assembly facing into the cavity at a region of the cavity spaced from the injection channel. A conducting channel in the forward end portion conducts the gas into the cavity when the member is in the second position. The conducting channel defines a gas-discharge opening for discharging the gas into the cavity.

Abstract: The present invention relates to a method of forming shaped articles having a continuous phase of an oriented thermoplastic polymer containing cross-linked polymer microbeads at least partially bordered by void space. The thermoplastic polymer in molten form is mixed with a plurality of the crosslinked polymer microbeads, and the mixture is then formed into a shaped article. The article is stretched in at least one direction to orient it. The orienting conditions and the character and quantity of crosslinked polymer microbeads is effective to form voids in the article at least bordering the microbeads on sides thereof in the direction(s) of orientation.

Abstract: The method is used to process a synthetic moulding compound which crystallizes within a specific temperature range. In order to prevent milkiness in the blank to be produced, the moulding compound is chilled. The method prevents such milkiness, at least in the gate area of the blank, by keeping all of the moulding compound, during the operating cycle, as far as the gate area, at a temperature which is above the temperature T.sub.CC below which the moulding compound begins to crystallize. A gate system, which may be used to carry out the method, uses, in the interior of the injection nozzle, a strongly heat conducting nozzle core, a strongly heat conducting area in the immediate vicinity of the gate opening, and a gap for heat insulation of the nozzle tip, the nozzle core and the moulded body.

Abstract: Melt fabrication, with precompounding, of a plurality of thermoplastic resins, is provided by use of a screw having a dispersion section in such machines as injection molding machines. The minor resin component can be an elastomer, which toughens the resin's major component. This effect is improved by increasing back pressure on the screw used in the injection molding machine, to extend the screw rotation and thus shear time accomplished by the dispersion section.

Abstract: A thin-walled bottle has ribs at least at its bottom portion, and the bottle bottom is raised up frusto-conically or has an undulatory shape. A tubular intermediate is first formed with ribs which become thin-walled protuberant ribs after blow molding. The thin-walled bottle is produced by blow-molding the ribbed tubular intermediate.

Abstract: Melt fabrication, without precompounding, of a composition comprising a thermoplastic resin, an acid containing ethylene copolymer and a polymeric grafting agent, is provided by (1) bringing the molten components of the composition together for the first time, (2) intermittently shearing the components, preferably in an injection molding machine or a blow molding machine having a screw with a shearing section, and (3) intermittently fabricating in one-step the sheared molten composition into articles of pre-determined shape. The thermoplastic resin is less than 50 volume percent and is at least one continuous phase in the composition. The process is improved by increasing back pressure on the screw used in the injection molding machine, to extend the screw rotation and shear time.

Abstract: Presented in this invention are a bottle made of polyethylene naphthalate resin and formed by stretching a preform so that the stretch index defined as follows be 130 cm or more, wherein gas barrier properties are improved greatly.

Abstract: An injection stretch blow molding process performs a cycle of molding steps by circulating a plurality of neck mold sets for holding the neck portions of preforms. The first step is conveying a neck mold, by which a preform has been molded in the injection molding stage, disposed at one end of a horizontal path of movement for conveying said neck mold to the stretch blow molding stage disposed at the other end of the horizontal path of movement. The second step is returning a neck mold, from which a blow molded product has been ejected in the ejection stage, offset vertically from the middle of the horizontal path of movement, back to the injection molding stage, which is empty, through a vertical path of movement connecting the horizontal path of movement with the ejection stage and through the horizontal path of movement, after the first step has started.

Abstract: A process of blow molding, and compositions useful in the process. The articles are blow molded from compositions formed from thermoplastic polymeric material, a fluorinated olefinic polymer or copolymer and, optionally, an elastomeric impact modifier.

Abstract: A hollow container having a grip is formed by injection molding the grip and annular rings onto a blow molded container. An injection molded parison is first stretch blow molded to form a hollow container body having annular grooves. The hollow container body is then placed in a mold having molding grooves and a grip molding cavity. The molding grooves on the mold and the annular grooves on the container body together define connecting ring molding cavities. A pressure higher than ambient pressure is applied to the interior of the hollow container body. Then the grip and connecting rings are formed onto the hollow container body by injection filling the grip and connecting ring molding cavities.

Abstract: The present invention relates to a rotary type injection molding machine including a base plate provided in its surface with a rotary disk having hold molds at three portions on the lower surface thereof and having required core insert holes bored at stop positions of the hold molds, a support post on a machine bed vertically movably supporting the base plate and the rotary disk in the central portion thereof, the support post being intermittently rotated together with the rotary disk, a vertical clamping device on the machine bed in which one of the stop positions of the hold molds serves as an injection molding section and a clamping plate having a core mold at the lower side thereof is connected by movable tie bars on opposite sides to be positioned upwardly of the base plate, and an injection mold secured to the machine bed of the injection molding section, the base plate being movably supported by the movable tie bars and linked to the clamping device, an upper portion of the support post being carried b

Abstract: The core rod according to the invention includes a first part (A) for mounting on an injection blow-moulding machine and a second part (B) intended to be received in a mould having an inclined cylindrical stage (30), an inclined part (34) and a connecting zone (36), in order, by the injection blow-moulding technique, to produce a bottle in one piece which has a neck inclined relative to the axis of the bottle.

Abstract: A plurality of injection cores are inserted by a movable platen into corresponding injection cavities defined by mold inserts within a stationary platen, and the cores extend through corresponding split transfer mold cavities. After hollow preforms with threaded neck portions are molded within the cavities, the preforms are removed from the mold cavities, separated from the injection cores, and then shifted transversely by the split transfer molds to cooling or blow cavities defined by blow cavity inserts within the stationary platen on opposite sides of the corresponding injection cavities. The transfer molds return to receive the injection cores, and corresponding blow core units are inserted into the preforms within the blow cavities for pressurizing and expanding the preforms into firm contact with the blow inserts. The preforms are removed from the blow cavities by the blow cores in alternate cycles of press operation and are then released by retraction of the blow cores.

Abstract: A method for producing an integral bottle/collar combination for use in a package for storing and dispensing potentially dangerous material such as medicament tablets. The package is resistant to opening by children yet readily openable by adults. The process includes a step of injection molding a polymeric part having a finish portion, a preform portion, and a flange portion. The flange portion has at least one integrally formed socket having a resiliently deformable pushtab connected by a hinge. The preform portion of the injection molded part is blow molded into the shape of the bottle. The hingedly connected pushtab is then folded into its in-use position.

Abstract: A crystalline saturated polyester resin such as polyethylene terephthalate, is molded into a desired shape in a molding machine under conditions such that the crystallization temperature of the resulting molded article is within 20.degree. C. of the crystallization temperature of the starting saturated crystalline polyester resin. This is accomplished by preheating the resin in the molding apparatus to a temperature above its melting point to lower the viscosity of the resin to such an extent that the resin is not substantially degraded in the compression section of the molding machine. By avoiding reductions in the crystallization temperature of the molded resin, the resin can be shaped by, for example, blow molding into a bottle or other configuration while satisfying simultaneously the requirements for transparency and dimensional stability.

Abstract: An improved PET process, system and container which uses an improved single stage process to produce a thermally stable container. The single stage process arrests the cooling of the preform at elevated temperatures followed by equilibriation to a set temperature in a conditioning station at controlled time rates to achieve high crystallinity in the container side wall. Special provisions are made for establishing a transition zone temperature gradient adjacent the container mouth to achieve high crystallization in the transition zone. The container is especially configured in a number of instances to make it suitable for hot fill applications. One such instance includes rigidizing the body side wall against radial and longitudinal vacuum distortion so that paper labels can be applied to the container.

Abstract: A container having a unitary hollow receptacle and closure is formed according to a process is which an injection molding step forms a preform of thermoplastic material having (1) a hollow body, (2) a closure base at one end of the hollow body to define an opening into the hollow body, and (3) a closure cover spaced from the closure base opening but connected to the closure base. The process further includes blow molding the preform hollow body to form the hollow receptacle so that it extends from the closure base and has a configuration different than the preform hollow body.

Abstract: A method for providing a dust-proof boot for a protruding equipment shaft of the type including a pair of spaced apart annular grooves. The boot includes an expandable central belly portion, a pair of restricted diameter attachment ring portions adapted to be received in the shaft grooves, and a pair of connecting portions connecting the attachment ring portions to the belly portion. It is formed by first forming a parison on a male die. The parison includes preformed attachment ring portions and connecting portions, at least one of which includes an inwardly protruding annular ridge member which is received in a mating recess in the die. The parison and the male die are inserted into a female blow-molding, die, with the preformed attachment ring portions and connecting portions caught and supported between the male and female dies.

Abstract: A synthetic resin thin-walled bottle, a tubular intermediate therefor and a method of producing a thin-walled bottle. The thin-walled bottle has ribs at least at its bottom portion, and the bottle bottom is raised up frusto-conically or has an undulatory shape. The tubular intermediate is first formed with ribs which become thin-walled protuberant ribs after blow molding. The thin-walled bottle is produced by blow-molding the ribbed tubular intermediate.

Abstract: A colored container of polyester obtained by injection molding of a preform starting from colorless polyester granulate to which a particulate dyestuff composition is fed. The particulate dyestuff composition used is a particulate intimate mixture of a dyestuff and/or a pigment and a solid wax-like carrier having a melting point above 45.degree. C. The preform obtained is converted to the final shape by blow molding.

Abstract: A champagne bottom plastic bottle having the bottom reinforced by internal radiating ribs which are formed by solid material. The bottle is formed in the customary manner by utilizing a preform which has molded on the inner surface thereof longitudinal ribs. The preform is formed by conventional injection molding equipment which has been modified only to form along the lower part of the customary core member longitudinally extending rib forming grooves.

Abstract: A reheat blow mold machine includes a preform loader, an oven, a mold station and a preform transfer mechanism for transporting preforms from the oven to the mold station. A loader defines a plurality of lanes within which the preforms are supported. A reciprocal jaw assembly moves the preforms from a receiving end to a load end of the oven. The oven includes a plurality of tandemly arranged abutting pallets which rotatably support the preforms. The pallets are stepped through the oven and moved between a receiving end and a discharge end by a pair of elevators and a return conveyor. The transfer mechanism includes two sets of jaw assemblies, a pair of slidable actuators and a compensation mechanism to automatically adjust for tolerance variations in the diameter of the preforms. A mold station includes a pair of opposed platens which support mold halves. A bottom platen is positioned by a cam arrangement mounted on the opposed platens.

Abstract: A plurality of injection cores are inserted by a movable platen into corresponding injection cavities defined by mold inserts within a stationary platen, and the cores extend through corresponding split transfer mold cavities. After hollow preforms with threaded neck portions are molded within the cavities, the preforms are removed from the mold cavities, separated from the injection cores, and then shifted transversely by the split transfer molds to cooling or blow cavities defined by blow cavity inserts within the stationary platen on opposite sides of the corresponding injection cavities. The transfer molds return to receive the injection cores, and corresponding blow core units are inserted into the preforms within the blow cavities for pressurizing and expanding the preforms into firm contact with the blow inserts. The preforms are removed from the blow cavities by the blow cores on alternate cycles of press operation and are then released by retraction of the blow cores.

Abstract: Disclosed is a method of making shaped articles including a continuous polyester phase having dispersed therein microbeads of cellulose acetate which are at least partially bordered by void space, the microbeads of cellulose acetate being present in an amount of about 10-30% by weight based on the weight of said polyester, said void space occupying about 2-50% by volume of said shaped article. Articles made by this method have excellent physical properties, especially optical properties, and are useful in such applications as paper substitutes, for example.

Abstract: Injection molding method removing weld lines from a part, such as a parison, which weld lines are caused by the interruption or splitting of the flow of plastic material around core support pins or the like by the provision of an annular mixing chamber which opens into the plastic material flow passage. The plastic material is caused to move radially into the mixing chamber where it is spread by reason of the increasing volume encountered, accompanied by a reversal of flow radially inwardly into an annular injection gate. The movement of plastic material within the chamber and the resultant increase in temperature by reason of shear, eliminates the weld lines which have been formed in the material by reason of the splitting of flow around the pins.

Abstract: An apparatus for forming a unitary molded container with a special neck configuration such as a drain-back neck with integrally molded internal threads and a pouring spout. The apparatus comprises a circumferentially continuous sleeve which surrounds the core rod in an injection-blow molding machine.

Abstract: A biaxially oriented blow-molded container composed of a thermoplastic gas-barrier resin (resin B) and a thermoplastic resin (resin A) other than resin B and having excellent gas-barrier property and delamination strength. The container comprises a substantially non-oriented mouth portion composed of resin A, a portion composed of two layers of resin A and one layer of resin B which are laminated with the resin A layer and the resin B layer occurring alternately and a portion composed of three layers of resin A and two layers of resin B which are laminated with the resin A layer and the resin B layer occurring alternately. A portion having a small radius of curvature where delamination tends to occur is formed in a three-layer structure. A process for producing the container is also provided.

Abstract: A process for forming a polyarylenethioether stretched blow molded vessel, by a modified blow molding of a substantially linear polyarylenethioether having a melt viscosity of 3,000 to 20,000 poise [at 310.degree. C., shear rate=200 sec.sup.-1 ]. The modified blow molding involves injecting the polymer in a mold to form a bottomed parison, stretching the bottomed parison along its axis by means of a rod or mandrel, and the stretched bottomed parison is then subjected to blow molding to effect lateral stretching. The blow parison is then heat set.

Abstract: A method for making a partially crystalline, biaxially oriented heat set hollow plastic container from a hollow parison having an open end and a closed end comprising engaging the open end of a plastic parison which is at a temperature within its molecular orientation temperature range, positioning a mold base in axial alignment with said engaged hot parison, enclosing a hot mold about the mold base, the mold being at heat setting temperature, expanding the plastic parison within the hot mold and mold base by internal pressurization to induce biaxial orientation of the plastic parison and force the plastic parison into intimate contact and conformance with the hot mold and to maintain contact by such internal pressurization between the mold and the biaxially oriented container for a time sufficient to induce partial crystallization in the biaxially oriented container, lowering the internal pressure in the container, opening the hot mold while maintaining engagement of the open end and engagement of the mold b

Abstract: A method for molding double-layered preforms in an injection, stretching and blow molding machine. Plastic material is injected into a cavity formed by a mated inner preform and core mold and into another cavity formed by a mated outer preform, neck mold and a core mold carrying an inner preform to form respectively inner and outer preforms. The inner core mold is lifted, while carrying an inner preform, and moved over the outer preform mold. The outer core mold is lifted and the neck mold strips the double-layer preform formed by the injection of the outer preform onto the inner preform. The neck mold carrying the double-layer preform is moved away from alignment with the outer preform mold and advances the preform to heating, stretching and blow molding stages. Another neck mold is moved into alignment with the outer preform mold prior to lowering the core mold carrying the inner preform into the outer preform mold.

Abstract: The present invention provides a multiple platen-multiple position press or injection blow molding apparatus for use in the blow molding of containers in which a preform is molded onto a core and is moved relative to the core to space a body portion of the preform from the core when the core is in the blowing station to facilitate the temperature conditioning of the preform to achieve a desired biorientation of the thermoplastic material from which the preform is made when the preform is blow molded to form a container. The temperature conditioning may be achieved by allowing stabilization of the temperature gradient through the material of the preform with or without the assistance of a supply of gas to the preform at a desired temperature.

Abstract: An apparatus is disclosed that is intended for manufacturing a hollow body. The hollow body has a head piece formed by blow-molding a preform segment. The apparatus includes a ring-shaped nozzle, a withdrawal device, and blow-mold pieces which are laterally, reciprocally movable. Regions of the hollow body are fabricated to have outer diameters which are less than the diameter of the extruded tubular segment before the segment is blow-molded. This is achieved by a reciprocally movable mandrel with a molding extension. The molding extension extends both radially and inwardly between projecting regions of the closed blow-mold pieces. The projecting regions of the blow-mold pieces press the corresponding parts of the preform segment against the molding extension, wherewith the ring-shaped nozzle opening is radially, outwardly offset with respect to the outer contour of the molding extension.

Abstract: In an apparatus for manufacturing a hollow body, the hollow body comprises an injection-molded head piece, a body part formed by blow molding a preform segment which segment is integral with the head piece. The apparatus comprises a ring-shaped nozzle wherein a ring-shaped nozzle opening is defined between a nozzle cone piece and a nozzle opening piece. The apparatus further comprises a withdrawal device operative with respect to the ring-shaped nozzle, which withdrawal device is axially, reciprocally movable and has a recess. It is desired to enable production of different and/or novel configurations of the body parts of the hollow body. This is achieved by means for an additional mold device which is provided for an additional forming operation operative on the preform segment adjoining the head piece, which operation relates to the walls of the body part. The additional mold device provides an offset in the radial sense with respect to the ring-shaped nozzle opening.

Abstract: In an apparatus for manufacturing a plastic hollow body which hollow body is open on one end and closed on the other, for the forming of a head piece a withdrawal device rests on a ring-shaped nozzle having a ring-shaped nozzle having a ring-shaped nozzle opening, and for the forming of a plastic tubular segment the bottom elements of blow-mold pieces rest on the ring-shaped nozzle, to provide for blow-molding of the tubular segment by blow means.It is desired to be able to produce a hollow body with a closed head piece and a perforated bottom member.

Abstract: A nozzle for the injection molding of thermoplastic materials includes a nozzle body having a first bore for establishing a flow path for a molten thermoplastic. A first end of the nozzle body is adapted for fluid connection with a sprue of an associated mold body, and a second end thereof is adapted for fluid connection with an end of an associated injection molding machine. The nozzle body also includes a second bore. A first valve assembly, which is adapted for reciprocating movement in the nozzle body second bore, is provided to control the flow of plastic through the nozzle body. The first valve member includes a body having a tip portion and a fluid passage formed in the body and open at one end through the tip portion. A connection member is provided for communicating the valve body fluid passage with an associated source of pressurized fluid.

Abstract: A self-regulating gate valve assembly, adapted for use in a plastic product injection molding apparatus having a mold cavity and a core therein for molding a hollow product of predetermined design, is characterized by a construction substantially eliminating core deflection during plastic molding compound flow in the injection molding apparatus and thus uneven wall thicknesses and weld lines in the hollow molded plastic product. The gate valve assembly includes a valve pin of unique construction for creating a sheath-like flow configuration of the plastic molding compound as it is injected into the mold cavity to produce balanced forces on the mold core to prevent deflection and for closing the gate in a self-regulating manner when the mold cavity is filled.

Abstract: A one-piece plastic bottle of the champagne base variety having an annular peripheral chime surrounding an inward sloping base portion for containing carbonated beverages and associated methods for making the bottle by blow molding. To make the bottle resist to inversion of the base from internal pressure, an integral reinforcing ring is incorporated into the base and runs horizontally in the hoop direction. The reinforcing ring is placed in a location within the base that has a moment arm trying to invert the base and providing sufficient strength to withstand that moment arm and prevent inversion of the inward sloping portion.

Abstract: An injection stretch blow container consisting of a combination of 97 to 70 parts by weight of saturated polyester and 3 to 30 parts by weight of a saponification product of an ethylene-vinyl acetate copolymer, said container having many areas, particularly at the body wall portion of said container in each of which areas substantially two-dimensional thin layers of said saponification product of said ethylene-vinyl acetate copolymer are laminated in parallel to the wall surface of said container in a matrix of saturated polyester, said saponification product of said ethylene-vinyl acetate copolymer in said area (20.times.20.mu.; vertical section or longitudinal section of the body wall of said container) is 0.001 to 1 .mu.m in average thickness and at least 5 in average aspect ratio and the laminated structural index represented by the following formula is at least 5:Laminated structural index ##EQU1## wherein L.sub.

Abstract: The present invention provides an injection stretch blow molding apparatus in which a peripheral edge of a flat preform forms the edge or lip portion of a cup-like container. A securing or grip mold and a core mold are brought together to form the lip. The securing or grip mold is carried on the underside of a rotary transfer disk. The peripheral edge of the preform is sandwiched in between a shoulder formed at the lower end of a blow core and the securing or grip mold when stretch blow molding is performed, resulting in a cup-like container. The finished container is then removed upwardly from the securing or grip mold.

Abstract: In the process to form a plastic flat bottle by blowing air into an injection molded parison having a bottom, the injection blow molding method of the invention is characterized in that the thicknesses of the portions of the parison to form the front and rear faces of the flat bottle are made larger than the thicknesses of the portions of the parison to form the side end faces of the flat bottle, thereby enlarging the heat capacity in the former portions of the parison to form the front and rear faces than that of the portions of the parison to form the side end faces of the flat bottle so as to make the former portions of the parison to be expanded more easily.

Abstract: The apparatus includes a carrier plate cooperating with an injection molding machine and having at least two sets of cavities therein for cooling the hollow plastic articles, with the number of cavities corresponding to a multiple of at least two times the number of hollow plastic articles produced in an injection molding cycle. The apparatus also includes means for aligning one set at a time of said carrier plate cavities to juxtapose said set of cavities with the hollow plastic articles formed in an injection molding cycle, and means for transferring said hollow plastic articles to said juxtaposed cavities.

Abstract: A core rod assembly for injection blow molding machines comprising a plurality of hollow core rods each of which has a closed end and an open end which is threaded on a core rod spool that is telescopically received in a core rod body such that the core rod and core rod spool has limited longitudinal movement relative to the core rod body for the purpose of permitting blow air to be provided for blowing a parison on the core rod. A tube extends through an opening in each core rod spool and the opening core rod and the spool has laterally extending passages communicating with the exterior of the spool. The passages are connected to spaced passages of a manifold by bellows type adaptors such that temperature control fluid such as liquid or air can be circulated through the tube and thereafter about the tube to cool the core rod.

Abstract: A plastic bottle (10) formed from a preform (30) preferably having an unexpanded long neck (15) with the configuration and dimensions of the finished bottle (10) and an unexpanded handle (16) integral with and extending from the neck (15). The handle (16) includes a support ring (13) integral with the lower end of the neck (15) and an L-shape projection (22 and 24) extending therefrom. The bottle (10) also has an expanded portion (14 and 40) below the ring (13) including a recess (29) which centrally positions the handle (16) to facilitate lifting, carrying and pouring. In forming the bottle (10) in a preferred blow molding embodiment of the invention, the neck (15) remains constant in size while the handle support ring (13) positions and restricts movement of the preform (30) and the expandable portion (38) is blown to form the desired expanded shoulder and body (14 and 40).

Abstract: A method and apparatus for the forming of a champagne bottom plastic bottle wherein the bottom is reinforced by internal radiating ribs which are formed by solid material. The bottle is formed in the customary manner by utilizing a preform which has molded on the inner surface thereof longitudinal ribs. The preform is formed by conventional injection molding equipment which has been modified only to form along the lower part of the customary core member longitudinally extending rib forming grooves.

Abstract: A method and apparatus for injection blow molding hollow plastic articles characterized by increased capacity due to back-to-back operations or stack molding and a rapid and efficient operating cycle. The process and apparatus includes back-to-back injection mold stations, back-to-back blow mold stations located on each side of and adjacent said injection mold stations in side-by-side relationship therewith, back-to-back ejection stations located adjacent each of said blow mold stations in side-by-side relationship, and blow cores cooperating with said injection stations and blow stations, wherein the operation of said cores is facilitated by an overlapping cycle.

Abstract: The apparatus includes a carrier plate cooperating with an injection molding machine and having at least two sets of cavities therein for cooling the hollow plastic articles, with the number of cavities corresponding to a multiple of at least two times the number of hollow plastic articles produced in an injection molding cycle. The apparatus also includes means for aligning one set at a time of said carrier plate cavities to juxtapose said set of cavities with the hollow plastic articles formed in an injection molding cycle, and means for transferring said hollow plastic articles to said juxtaposed cavities.